Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Combination of cascade and pole changing Cascade control Rheostat control Pole changing Combination of cascade and pole changing Cascade control Rheostat control Pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In India, electrification of railway track was done for the first time in which of the following years? 1940-1942 1935 - 1938 1920-1925 1925 - 1932 1940-1942 1935 - 1938 1920-1925 1925 - 1932 ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Watt-hours per tonne km is usually the specific energy consumption for suburban services. 100-150 150-200 120-150 50 - 75 100-150 150-200 120-150 50 - 75 ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The wheels of a train, engine as well as bogies, are slightly tapered to Facilitate in taking turns Facilitate braking Increase friction Reduce friction Facilitate in taking turns Facilitate braking Increase friction Reduce friction ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The efficiency of diesel locomotives is nearly 60 to 70 percent 20 to 25 percent 45 to 55 percent 30 to 40 percent 60 to 70 percent 20 to 25 percent 45 to 55 percent 30 to 40 percent ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The normal value of adhesion friction is 0.30 0.50 0.25 0.35 0.30 0.50 0.25 0.35 ANSWER DOWNLOAD EXAMIANS APP
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